Encysted, non-motile and nonfeeding infectious stage of Entamoeba histolytica is called

Options

A. Sporozoite
B. Minuta form
C. Mature cyst
D. Trophic form.

Answer

To answer the question regarding the encysted, non-motile, and non-feeding infectious stage of Entamoeba histolytica, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Organism**: Entamoeba histolytica is a protozoan parasite known for causing amoebic dysentery or amoebiasis. It is important to recognize its life cycle and forms.

2. **Identify the Forms of Entamoeba histolytica**: There are two main forms of Entamoeba histolytica:
- **Trophozoite**: This is the active, motile, and feeding stage that can cause disease by invading the intestinal mucosa.
- **Cyst**: This is the encysted, non-motile, and non-feeding stage that is resistant to environmental conditions.

3. **Focus on the Cyst Stage**: The question specifically asks for the infectious stage that is encysted, non-motile, and non-feeding. The cyst form is the one that fits this description.

4. **Identify the Type of Cyst**: The mature cyst of Entamoeba histolytica is known as the **quadruple nucleus cyst** (quadrenucleate cyst). This is the stage that is infectious and can be transmitted through contaminated food and water.

5. **Conclusion**: Therefore, the correct answer to the question is that the encysted, non-motile, and non-feeding infectious stage of Entamoeba histolytica is called the **quadrenucleate cyst**.

### Final Answer:
The encysted, non-motile, and non-feeding infectious stage of Entamoeba histolytica is called the **quadrenucleate cyst**.

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